When the first TV newscast described a SARS-like flu affecting a distant Chinese metropolis, investigative journalist Elaine Dewar started asking questions: Was SARS-CoV-2 something that came from nature, as leading scientists insisted, or did it come from a lab, and what role might controversial experiments have played in its development? Why was Wuhan the pandemic's ground zero--and why, on the other side of the Atlantic, had two researchers been...